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Commit 0129241e authored by Tao Ma's avatar Tao Ma Committed by Joel Becker
Browse files

ocfs2: Attach xattr clusters to refcount tree. 



In ocfs2, when xattr's value is larger than OCFS2_XATTR_INLINE_SIZE,
it will be kept outside of the blocks we store xattr entry. And they
are stored in a b-tree also. So this patch try to attach all these
clusters to refcount tree also.

Signed-off-by: default avatarTao Ma <tao.ma@oracle.com>
parent 47bca495

fs/ocfs2/refcounttree.c

+26 −3
Original line number Diff line number Diff line
@@ -3547,7 +3547,8 @@ int ocfs2_add_refcount_flag(struct inode *inode, 
			    struct ocfs2_caching_info *ref_ci,

			    struct buffer_head *ref_root_bh,

			    u32 cpos, u32 p_cluster, u32 num_clusters,

			    struct ocfs2_cached_dealloc_ctxt *dealloc)

			    struct ocfs2_cached_dealloc_ctxt *dealloc,

			    struct ocfs2_post_refcount *post)

{

	int ret;

	handle_t *handle;
@@ -3576,6 +3577,9 @@ int ocfs2_add_refcount_flag(struct inode *inode, 
		}

	}



	if (post)

		credits += post->credits;



	handle = ocfs2_start_trans(osb, credits);

	if (IS_ERR(handle)) {

		ret = PTR_ERR(handle);
@@ -3594,8 +3598,16 @@ int ocfs2_add_refcount_flag(struct inode *inode, 
	ret = __ocfs2_increase_refcount(handle, ref_ci, ref_root_bh,

					p_cluster, num_clusters,

					meta_ac, dealloc);

	if (ret) {

		mlog_errno(ret);

		goto out_commit;

	}



	if (post && post->func) {

		ret = post->func(inode, handle, post->para);

		if (ret)

			mlog_errno(ret);

	}



out_commit:

	ocfs2_commit_trans(osb, handle);
@@ -3688,7 +3700,7 @@ static int ocfs2_attach_refcount_tree(struct inode *inode, 
						      &ref_tree->rf_ci,

						      ref_root_bh, cpos,

						      p_cluster, num_clusters,

						      &dealloc);

						      &dealloc, NULL);

			if (ret) {

				mlog_errno(ret);

				goto unlock;
@@ -3699,6 +3711,17 @@ static int ocfs2_attach_refcount_tree(struct inode *inode, 
		cpos += num_clusters;

	}



	if (oi->ip_dyn_features & OCFS2_HAS_XATTR_FL) {

		ret = ocfs2_xattr_attach_refcount_tree(inode, di_bh,

						       &ref_tree->rf_ci,

						       ref_root_bh,

						       &dealloc);

		if (ret) {

			mlog_errno(ret);

			goto unlock;

		}

	}



	if (data_changed) {

		ret = ocfs2_change_ctime(inode, di_bh);

		if (ret)

fs/ocfs2/refcounttree.h

+7 −0
Original line number Diff line number Diff line
@@ -83,4 +83,11 @@ int ocfs2_refcount_cow_xattr(struct inode *inode, 
			     struct buffer_head *ref_root_bh,

			     u32 cpos, u32 write_len,

			     struct ocfs2_post_refcount *post);

int ocfs2_add_refcount_flag(struct inode *inode,

			    struct ocfs2_extent_tree *data_et,

			    struct ocfs2_caching_info *ref_ci,

			    struct buffer_head *ref_root_bh,

			    u32 cpos, u32 p_cluster, u32 num_clusters,

			    struct ocfs2_cached_dealloc_ctxt *dealloc,

			    struct ocfs2_post_refcount *post);

#endif /* OCFS2_REFCOUNTTREE_H */

fs/ocfs2/xattr.c

+291 −0
Original line number Diff line number Diff line
@@ -5550,6 +5550,297 @@ out: 
	return ret;

}



/*

 * Add the REFCOUNTED flags for all the extent rec in ocfs2_xattr_value_root.

 * The physical clusters will be added to refcount tree.

 */

static int ocfs2_xattr_value_attach_refcount(struct inode *inode,

				struct ocfs2_xattr_value_root *xv,

				struct ocfs2_extent_tree *value_et,

				struct ocfs2_caching_info *ref_ci,

				struct buffer_head *ref_root_bh,

				struct ocfs2_cached_dealloc_ctxt *dealloc,

				struct ocfs2_post_refcount *refcount)

{

	int ret = 0;

	u32 clusters = le32_to_cpu(xv->xr_clusters);

	u32 cpos, p_cluster, num_clusters;

	struct ocfs2_extent_list *el = &xv->xr_list;

	unsigned int ext_flags;



	cpos = 0;

	while (cpos < clusters) {

		ret = ocfs2_xattr_get_clusters(inode, cpos, &p_cluster,

					       &num_clusters, el, &ext_flags);



		cpos += num_clusters;

		if ((ext_flags & OCFS2_EXT_REFCOUNTED))

			continue;



		BUG_ON(!p_cluster);



		ret = ocfs2_add_refcount_flag(inode, value_et,

					      ref_ci, ref_root_bh,

					      cpos - num_clusters,

					      p_cluster, num_clusters,

					      dealloc, refcount);

		if (ret) {

			mlog_errno(ret);

			break;

		}

	}



	return ret;

}



/*

 * Given a normal ocfs2_xattr_header, refcount all the entries which

 * have value stored outside.

 * Used for xattrs stored in inode and ocfs2_xattr_block.

 */

static int ocfs2_xattr_attach_refcount_normal(struct inode *inode,

				struct ocfs2_xattr_value_buf *vb,

				struct ocfs2_xattr_header *header,

				struct ocfs2_caching_info *ref_ci,

				struct buffer_head *ref_root_bh,

				struct ocfs2_cached_dealloc_ctxt *dealloc)

{



	struct ocfs2_xattr_entry *xe;

	struct ocfs2_xattr_value_root *xv;

	struct ocfs2_extent_tree et;

	int i, ret = 0;



	for (i = 0; i < le16_to_cpu(header->xh_count); i++) {

		xe = &header->xh_entries[i];



		if (ocfs2_xattr_is_local(xe))

			continue;



		xv = (struct ocfs2_xattr_value_root *)((void *)header +

			le16_to_cpu(xe->xe_name_offset) +

			OCFS2_XATTR_SIZE(xe->xe_name_len));



		vb->vb_xv = xv;

		ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);



		ret = ocfs2_xattr_value_attach_refcount(inode, xv, &et,

							ref_ci, ref_root_bh,

							dealloc, NULL);

		if (ret) {

			mlog_errno(ret);

			break;

		}

	}



	return ret;

}



static int ocfs2_xattr_inline_attach_refcount(struct inode *inode,

				struct buffer_head *fe_bh,

				struct ocfs2_caching_info *ref_ci,

				struct buffer_head *ref_root_bh,

				struct ocfs2_cached_dealloc_ctxt *dealloc)

{

	struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;

	struct ocfs2_xattr_header *header = (struct ocfs2_xattr_header *)

				(fe_bh->b_data + inode->i_sb->s_blocksize -

				le16_to_cpu(di->i_xattr_inline_size));

	struct ocfs2_xattr_value_buf vb = {

		.vb_bh = fe_bh,

		.vb_access = ocfs2_journal_access_di,

	};



	return ocfs2_xattr_attach_refcount_normal(inode, &vb, header,

						  ref_ci, ref_root_bh, dealloc);

}



struct ocfs2_xattr_tree_value_refcount_para {

	struct ocfs2_caching_info *ref_ci;

	struct buffer_head *ref_root_bh;

	struct ocfs2_cached_dealloc_ctxt *dealloc;

};



static int ocfs2_get_xattr_tree_value_root(struct super_block *sb,

					   struct ocfs2_xattr_bucket *bucket,

					   int offset,

					   struct ocfs2_xattr_value_root **xv,

					   struct buffer_head **bh)

{

	int ret, block_off, name_offset;

	struct ocfs2_xattr_header *xh = bucket_xh(bucket);

	struct ocfs2_xattr_entry *xe = &xh->xh_entries[offset];

	void *base;



	ret = ocfs2_xattr_bucket_get_name_value(sb,

						bucket_xh(bucket),

						offset,

						&block_off,

						&name_offset);

	if (ret) {

		mlog_errno(ret);

		goto out;

	}



	base = bucket_block(bucket, block_off);



	*xv = (struct ocfs2_xattr_value_root *)(base + name_offset +

			 OCFS2_XATTR_SIZE(xe->xe_name_len));



	if (bh)

		*bh = bucket->bu_bhs[block_off];

out:

	return ret;

}



/*

 * For a given xattr bucket, refcount all the entries which

 * have value stored outside.

 */

static int ocfs2_xattr_bucket_value_refcount(struct inode *inode,

					     struct ocfs2_xattr_bucket *bucket,

					     void *para)

{

	int i, ret = 0;

	struct ocfs2_extent_tree et;

	struct ocfs2_xattr_tree_value_refcount_para *ref =

			(struct ocfs2_xattr_tree_value_refcount_para *)para;

	struct ocfs2_xattr_header *xh =

			(struct ocfs2_xattr_header *)bucket->bu_bhs[0]->b_data;

	struct ocfs2_xattr_entry *xe;

	struct ocfs2_xattr_value_buf vb = {

		.vb_access = ocfs2_journal_access,

	};

	struct ocfs2_post_refcount refcount = {

		.credits = bucket->bu_blocks,

		.para = bucket,

		.func = ocfs2_xattr_bucket_post_refcount,

	};

	struct ocfs2_post_refcount *p = NULL;



	/* We only need post_refcount if we support metaecc. */

	if (ocfs2_meta_ecc(OCFS2_SB(inode->i_sb)))

		p = &refcount;



	mlog(0, "refcount bucket %llu, count = %u\n",

	     (unsigned long long)bucket_blkno(bucket),

	     le16_to_cpu(xh->xh_count));

	for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {

		xe = &xh->xh_entries[i];



		if (ocfs2_xattr_is_local(xe))

			continue;



		ret = ocfs2_get_xattr_tree_value_root(inode->i_sb, bucket, i,

						      &vb.vb_xv, &vb.vb_bh);

		if (ret) {

			mlog_errno(ret);

			break;

		}



		ocfs2_init_xattr_value_extent_tree(&et,

						   INODE_CACHE(inode), &vb);



		ret = ocfs2_xattr_value_attach_refcount(inode, vb.vb_xv,

							&et, ref->ref_ci,

							ref->ref_root_bh,

							ref->dealloc, p);

		if (ret) {

			mlog_errno(ret);

			break;

		}

	}



	return ret;



}



static int ocfs2_refcount_xattr_tree_rec(struct inode *inode,

				     struct buffer_head *root_bh,

				     u64 blkno, u32 cpos, u32 len, void *para)

{

	return ocfs2_iterate_xattr_buckets(inode, blkno, len,

					   ocfs2_xattr_bucket_value_refcount,

					   para);

}



static int ocfs2_xattr_block_attach_refcount(struct inode *inode,

				struct buffer_head *blk_bh,

				struct ocfs2_caching_info *ref_ci,

				struct buffer_head *ref_root_bh,

				struct ocfs2_cached_dealloc_ctxt *dealloc)

{

	int ret = 0;

	struct ocfs2_xattr_block *xb =

				(struct ocfs2_xattr_block *)blk_bh->b_data;



	if (!(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED)) {

		struct ocfs2_xattr_header *header = &xb->xb_attrs.xb_header;

		struct ocfs2_xattr_value_buf vb = {

			.vb_bh = blk_bh,

			.vb_access = ocfs2_journal_access_xb,

		};



		ret = ocfs2_xattr_attach_refcount_normal(inode, &vb, header,

							 ref_ci, ref_root_bh,

							 dealloc);

	} else {

		struct ocfs2_xattr_tree_value_refcount_para para = {

			.ref_ci = ref_ci,

			.ref_root_bh = ref_root_bh,

			.dealloc = dealloc,

		};



		ret = ocfs2_iterate_xattr_index_block(inode, blk_bh,

						ocfs2_refcount_xattr_tree_rec,

						&para);

	}



	return ret;

}



int ocfs2_xattr_attach_refcount_tree(struct inode *inode,

				     struct buffer_head *fe_bh,

				     struct ocfs2_caching_info *ref_ci,

				     struct buffer_head *ref_root_bh,

				     struct ocfs2_cached_dealloc_ctxt *dealloc)

{

	int ret = 0;

	struct ocfs2_inode_info *oi = OCFS2_I(inode);

	struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;

	struct buffer_head *blk_bh = NULL;



	if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) {

		ret = ocfs2_xattr_inline_attach_refcount(inode, fe_bh,

							 ref_ci, ref_root_bh,

							 dealloc);

		if (ret) {

			mlog_errno(ret);

			goto out;

		}

	}



	if (!di->i_xattr_loc)

		goto out;



	ret = ocfs2_read_xattr_block(inode, le64_to_cpu(di->i_xattr_loc),

				     &blk_bh);

	if (ret < 0) {

		mlog_errno(ret);

		goto out;

	}



	ret = ocfs2_xattr_block_attach_refcount(inode, blk_bh, ref_ci,

						ref_root_bh, dealloc);

	if (ret)

		mlog_errno(ret);



	brelse(blk_bh);

out:



	return ret;

}



/*

 * 'security' attributes support

 */

fs/ocfs2/xattr.h

+5 −1
Original line number Diff line number Diff line
@@ -83,5 +83,9 @@ struct ocfs2_xattr_value_buf { 
	struct ocfs2_xattr_value_root	*vb_xv;

};





int ocfs2_xattr_attach_refcount_tree(struct inode *inode,

				     struct buffer_head *fe_bh,

				     struct ocfs2_caching_info *ref_ci,

				     struct buffer_head *ref_root_bh,

				     struct ocfs2_cached_dealloc_ctxt *dealloc);

#endif /* OCFS2_XATTR_H */